Where to place buttons on forms in a desktop application?

1. Where should buttons be on a form?
2. Should next Button be on left or right?
3. Where should back Button be placed?

Where should buttons be on a form?

Full page designs should have the primary button on the left side of the page. If the browser window is large, or you have to scroll down to fill out a form, it's best to have the primary button right below the last bit of content on the page.

Should next Button be on left or right?

This also means that when elements are presented in a row, the most important items (e.g. the Next button) should be presented on the left. Left aligning the primary action will ensure that it comes first whether buttons are inline or stacked.

Where should back Button be placed?

Place a persistent Back to Top button in the lower right side of the page. This is where people expect to see it. This position is out of the way, but noticeable. When the button is placed in a different place on the screen, it is often ignored.